NAD C 546BEE Service Manual

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SERVICE SAFETY PRECAUTIONS
1. Replacing the fuses
CAUTION: FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE REPLACE ONLY WITH SAME TYPE
OF FUSE.
Reference No Part Number Description
FC201
5120-0050+0 FUSE T1.6A/250V 5X20
FC202, FC204, FC205
5120-0018+0 FUSE T1A 250V 5X20
FC203
5120-0035+0 FU T100MA 250V
F101
5120-1169+0-C FUSE 0.8A 250V 8.35X4.3
2. Safety check out
(Only U.S.A. model)
Before returning the product to the customer, make leakage current or resistance measurements to determine that
exposed parts are acceptably insulated from the supply circuit.
Parts marked with the symbol are critical with regard to the risk of fire and electric shock.
Replace only with parts recommended by the manufacturer.
CONTENTS
DESCRIPTION PAGE
SPECIFICATIONS .............................................................4
REAR PANEL / FRONT PANEL...................................................5
DISASSEMBLY INSTRUCTIONS .................................................6
BLOCK DIAGRAM .............................................................7
WIRING DIAGRAM ............................................................8
RF PATTERN TESTING.........................................................9
IMPORTANT NOTES ........................................................10-12
MCU UPGRADE PROCEDURE ...............................................13-19
SERVO UPGRADE PROCEDURE ...............................................20
PCB LAYOUT..............................................................21-24
SCHEMATIC DIAGRAM......................................................25-30
IC BLOCK DIAGRAM........................................................31-37
TROUBLESHOOTING GUIDE...................................................38
ELECTRICAL PARTS LIST ...................................................39-53
TRAVERSE EXPLODED VIEW..................................................54
TRAVERSE EXPLODED VIEW PARTS LIST.......................................55
EXPLODED VIEW ............................................................56
EXPLODED VIEW PARTS LIST ...............................................57-58
PACKING DIAGRAM ..........................................................59
HISTORY CHANGE ...........................................................60

NAD C 546BEE Specifications

General

Frequency range	5 - 20000 Hz
Audio formats supported	MP3, WMA
Signal-to-Noise Ratio (SNR)	118 dB
Total Harmonic Distortion (THD)	0.0035 %
CD-R playback	Yes
Device type	Portable CD player
Product color	Graphite
Channel separation	110 dB
Playback disc types	CD-R, CD-RW
Disc types supported	CD-R
Power	9 W
Power source type	AC
AC adapter input voltage	230 V
Power consumption (standby)	0.5 W
USB 2.0 ports quantity	1
Package weight	6300 g

Weight and Dimensions

Depth	435 mm
Width	307 mm
Height	89 mm
Weight	4900 g